Lantern Flare is a rare Instant card from Innistrad: Double Feature (DBL), collector number 290. Current market price: $0.26 (foil $0.28), TCGplayer market prices via Scryfall.
Cleave {X}{R}{W} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Lantern Flare deals X damage to target creature or planeswalker and you gain X life. [X is the number of creatures you control.]